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The set S of numbers has the following properties [#permalink]
16 Oct 2005, 10:57
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16) The set S of numbers has the following properties: I) If x is in S, then 1/x is in S. II) If both x and y are in S, then so is x + y. Is 3 in S? (1) 1/3 is in S. (2) 1 is in S.
I have the ans as A...but its nt the right one. Ok just to let u know the ans here is D...and I dont understand how can B qualify. This question is from the forum itself & the logic is that nothing in property II prevents from having the same number.
when x & y are 2 diff variables....how can we assume as it being one number??? does this rule really apply to all DS or GMAt questions.